4hn2

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[[Image:4hn2.png|left|200px]]
 
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{{STRUCTURE_4hn2| PDB=4hn2 | SCENE= }}
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==Crystal structure of the catalytic domain of human diphosphoinositol pentakisphosphate kinase 2 (PPIP5K2) in complex with AMPPNP and a substrate analog 5PA-IP5==
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<StructureSection load='4hn2' size='340' side='right'caption='[[4hn2]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[4hn2]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=4gb4 4gb4]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4HN2 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4HN2 FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.9&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=0EJ:(2-OXO-2-{[(1S,2R,3S,4S,5R,6S)-2,3,4,5,6-PENTAKIS(PHOSPHONOOXY)CYCLOHEXYL]OXY}ETHYL)PHOSPHONIC+ACID'>0EJ</scene>, <scene name='pdbligand=ANP:PHOSPHOAMINOPHOSPHONIC+ACID-ADENYLATE+ESTER'>ANP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=4hn2 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4hn2 OCA], [https://pdbe.org/4hn2 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4hn2 RCSB], [https://www.ebi.ac.uk/pdbsum/4hn2 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4hn2 ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/VIP2_HUMAN VIP2_HUMAN] Bifunctional inositol kinase that acts in concert with the IP6K kinases IP6K1, IP6K2 and IP6K3 to synthesize the diphosphate group-containing inositol pyrophosphates diphosphoinositol pentakisphosphate, PP-InsP5, and bis-diphosphoinositol tetrakisphosphate, (PP)2-InsP4. PP-InsP5 and (PP)2-InsP4, also respectively called InsP7 and InsP8, regulate a variety of cellular processes, including apoptosis, vesicle trafficking, cytoskeletal dynamics, exocytosis, insulin signaling and neutrophil activation. Phosphorylates inositol hexakisphosphate (InsP6) at positions 1 or 3 to produce PP-InsP5 which is in turn phosphorylated by IP6Ks to produce (PP)2-InsP4. Alternatively, phosphorylates at position 1 or 3 PP-InsP5, produced by IP6Ks from InsP6, to produce (PP)2-InsP4.<ref>PMID:17690096</ref> <ref>PMID:17702752</ref>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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We synthesised analogues of diphosphoinositol polyphosphates (PP-InsPs) in which the diphosphate is replaced by an alpha-phosphonoacetic acid (PA) ester. Structural analysis revealed that 5-PA-InsP(5) mimics 5-PP-InsP(5) binding to the kinase domain of PPIP5K2; both molecules were phosphorylated by the enzyme. PA-InsPs are promising candidates for further studies into the biology of PP-InsPs.
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===Crystal structure of the catalytic domain of human diphosphoinositol pentakisphosphate kinase 2 (PPIP5K2) in complex with AMPPNP and a substrate analog 5PA-IP5===
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First synthetic analogues of diphosphoinositol polyphosphates: interaction with PP-InsP(5) kinase.,Riley AM, Wang H, Weaver JD, Shears SB, Potter BV Chem Commun (Camb). 2012 Oct 3. PMID:23032903<ref>PMID:23032903</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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==About this Structure==
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</div>
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[[4hn2]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=4gb4 4gb4]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4HN2 OCA].
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<div class="pdbe-citations 4hn2" style="background-color:#fffaf0;"></div>
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== References ==
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<references/>
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__TOC__
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</StructureSection>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
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[[Category: Wang, H.]]
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[[Category: Large Structures]]
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[[Category: Atp-grasp fold]]
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[[Category: Wang H]]
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[[Category: Inositol pyrophosphate kinase]]
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[[Category: Phosphoryl transferase]]
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[[Category: Pyrophosphate analog]]
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[[Category: Transferase-transferase inhibitor complex]]
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Current revision

Crystal structure of the catalytic domain of human diphosphoinositol pentakisphosphate kinase 2 (PPIP5K2) in complex with AMPPNP and a substrate analog 5PA-IP5

PDB ID 4hn2

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